Check511

Description

Five small boxes are placed in the corners and at

 

the center of active video. The boxes are on a black

 

background. Each box consists of alternating black

 

and white pixels that form a very fine

 

checkerboard. The secondary version inverts the

 

image, creating a white background. The colors

 

of the individual pixels in the boxes also are

 

inverted.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Test

Verify monitor resolution

Purpose

The resolution of your monitor should meet or

 

exceed the design specs.

Method

First adjust the brightness, contrast, and focus to

 

their correct settings. You should be able to see

 

individual and distinct pixels in each of the boxes.

 

Failure to see distinct pixels may indicate you have

 

a defective video amplifier, focus correction circuit

 

or picture tube.

 

 

 

 

 

 

 

Note – If multicolored areas appear on a mask-type color

 

picture tube, you may have a problem with convergence or

 

you may be exceeding the resolution of the picture tube.

 

4-13

Page 51
Image 51
Quantum Data 801GC, 801GF, 801GX manual Check511